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Air Pollution Increases Odds of Stillbirth in 3rd trimester
People, Environment

Air Pollution Increases Odds of Stillbirth in 3rd trimester

Prenatal exposure to harmful air-borne pollutants can likely increase the risk of stillbirth during the pregnancy’s third trimester, finds a new study based on ‘suggestive evidence.’
According to the researchers, nearly 2.6 million children worldwide were stillborn at 28 weeks or more in 2015, with the wide geographical variation in prevalence suggesting that most of these deaths were preventable, Business Standard reported.
“Stillbirth is one of the most neglected tragedies in global health today,” said Marie Pedersen from University of Copenhagen in Denmark.
The findings showed that specifically, a 4 microgram per cubic meter (µg/m3) increase in exposure to small particulate matter of less than 2.5 in diameter (PM2.5) was associated with a 2% increased risk of stillbirth.
Further, particles less than or equal to 10 micrometers in diameter (PM10), carbon monoxide, nitrogen dioxide and ozone also showed to have increased stillbirth risks.
“The existing evidence is suggestive of causality for air pollution and stillbirth without precise identification of the timing of exposure,” Pedersen added.
For the study, published online in Occupational & Environmental Medicine, the reviewed 13 studies, which found an association between exposure to air pollution -- particularly during the third term of pregnancy -- and a heightened risk of stillbirth.
“With the limited studies on the relevant topic, our review suggests strong priorities for future research. If the evidence of an association between ambient air population and stillbirth is confirmed in future studies, it would be of major public health importance,” Pedersen noted.

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